CN105803363A - Method for preventing and removing oxide colour or oxide skin generated by heat treatment for brass parts - Google Patents
Method for preventing and removing oxide colour or oxide skin generated by heat treatment for brass parts Download PDFInfo
- Publication number
- CN105803363A CN105803363A CN201610164946.0A CN201610164946A CN105803363A CN 105803363 A CN105803363 A CN 105803363A CN 201610164946 A CN201610164946 A CN 201610164946A CN 105803363 A CN105803363 A CN 105803363A
- Authority
- CN
- China
- Prior art keywords
- oil removing
- temperature
- heat treatment
- 2min
- time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
Abstract
The invention belongs to the technical field of surface treatment, and relates to a method for preventing and removing an oxide colour or an oxide skin generated by heat treatment for brass parts. According to the method disclosed by the invention, a processing technological flow for the brass parts is adjusted to comprise the steps of blanking and forming, trichloroethylene oil removal, organic solvent oil removal, alkali oil removal, deionized water washing, corrosion, passivation, flowing cold water washing, stabilizing treatment, drying, destressing heat treatment, and passivation film removal. According to the method disclosed by the invention, pollution is controlled on the protection layer by means of adding a compact passivation layer as a transitional protection layer during the destressing heat treatment for brass, and removing the passivation layer after the destressing heat treatment, so that matrix metal is out of touch with the pollution. After the method is used, the metal basic colour and gloss of the brass can be obtained on the surfaces of the parts.
Description
Technical field
The invention belongs to technical field of surface, relate to a kind of prevention and the method removing pyrite part heat-treatment oxidation color or oxide skin.
Background technology
Obtain for the elimination produced internal stress of cold deformation processing after brass part processing and be inclined to crackle close to poised state tissue, stable dimensions, minimizing deformation, before completion, carry out heat treatment.Owing to before heat treatment, raw material surface exists the pollution caused in pollutant and manual operation and circular flow, more serious oxidation tint, fingerprint mark is had to be solidificated in piece surface and be difficult to remove after heat treatment, have a strong impact on accessory appearance and bonding quality, it is impossible to reach user's requirement.Traditional processing method is to carry out surface treatment procedure after destressing heat treatment to be: blanking shapes the washing pickling of trichloro ethylene oil removing destressing heat treatment Solvent degreasing alkali oil removing deionization.
For removing oxidation tint produced by brass part heat treatment, increase oil removing, pickling process generally after heat treatment, piece surface is processed, but fact proved, adopt the method to be difficult to remove hot setting in the oxide skin of piece surface and oxidation tint.In the past few years, on sight is rested on the tracking to the postprocessing working procedures (oil removing, pickling) after pyrite part heat treatment always and adjusts by engineers and technicians, but still fail to make problem be solved thoroughly.
Summary of the invention
It is an object of the invention to for problem existing at present, it is proposed to a kind of prevention and the method removing pyrite part heat-treatment oxidation color or oxide skin.The technical solution of the present invention is,
1). blanking shapes
2). trichloro ethylene oil removing
Trichloro ethylene
Radix Paeoniae Rubra volume ratio 1.5%～3%
Oil removing temperature 87 DEG C～91 DEG C
PH6～11
Anhydrous
With the speed less than 4m/min, part being immersed in trichloroethylene steam district, part is at least wanted to carry out oil removing in trichloro ethylene vapours district vapours irrigation twice, must not have solvent hold-up after oil removing on part；
3). Solvent degreasing
At room temperature, dipping acetone or trichloroethane organic solvent with absorbent cotton or non-dust cloth, piece surface is carried out wiping oil removing, then dress odd part immerses oil removing in alkali oil removing solution；
4). alkali oil removing
Sodium carbonate 35g/l～45g/l
Sodium phosphate 17g/l～23g/l
Sodium silicate 1ml/l
N。63110ml/l
Deionized water
Temperature: 55 DEG C～65 DEG C
Persistent period: 18min～20min
5). washing
Deionized water, washing time >=2min；
6). pickling
Sulphuric acid 250g/l～300g/l
Chromic anhydride 45g/l～55g/l
Temperature: 55 DEG C～65 DEG C
Time: >=2min
7). passivation
Sodium dichromate 100g/l～150g/l
Sulphuric acid 4g/l～6g/l
Sodium chloride 5g/l～18g/l
Temperature: 10 DEG C～35 DEG C
Time: 2min～5min
8). flowing cool water is washed
Tap water
Temperature: 12 DEG C～35 DEG C
Time: >=2min
9). stabilized treatment
Tap water
Temperature: 40 DEG C～60 DEG C
Persistent period: 10s～20s
10). dry
Persistent period: 20min～30min
Temperature: 80 DEG C～100 DEG C
11). destressing heat treatment
Temperature: 250 DEG C～280 DEG C
Persistent period: 1h～2h
The type of cooling: natural cooling
12). depassivation film
Chromic anhydride 80g/l～140g/l
Sulphuric acid 3g/l～6g/l
Temperature: 10 DEG C～40 DEG C
Time: 3s～15s.
The present invention has the advantage that and beneficial effect,
The present invention increases transitional overcoat in destressing heat treatment, the method adopting passivation before heat treatment makes piece surface form the passivating film of densification, in order to take precautions against the pollution caused in heat treatment and part inter process circular flow, after heat treatment contaminated passivating film is removed, make part present the brass base true qualities of light.
Pyrite destressing heat treatment process increases comparatively dense passivation layer as transitional overcoat, by the method for its stripping after destressing heat treatment, by Environmental capacity on overcoat, make parent metal not contact stain.Make after in this way, brass wire this normal complexion gloss can be obtained at piece surface.
Detailed description of the invention
Increase before destressing heat treatment and be passivated part processing, that is: Solvent degreasing alkali oil removing washing corrosion and passivation washing stabilized treatment dries, depassivation membrane process is increased, by passivating film stripping to the brass base exposing light after destressing heat treatment.Namely pyrite part processing process is adjusted to:
Blanking shapes trichloro ethylene oil removing Solvent degreasing alkali oil removing deionization washing corrosion and passivation flowing cool water and washes the dry destressing heat treatment of stabilized treatment except passivating film
1. blanking shapes
2. trichloro ethylene oil removing
Trichloro ethylene
Radix Paeoniae Rubra (volume ratio) 1.5%～3%
Oil removing temperature 87 DEG C～91 DEG C
PH6～11
Anhydrous
With the speed less than 4m/min, part being immersed in steam, part is at least wanted to carry out oil removing in vapours district vapours irrigation twice.
Part must not have after oil removing solvent hold-up.
3. Solvent degreasing
At room temperature, dipping the organic solvent such as acetone, trichloroethane with absorbent cotton or non-dust cloth, piece surface is carried out wiping oil removing, then dress odd part immerses oil removing in alkali oil removing solution.
4. alkali oil removing
Sodium carbonate 35g/l～45g/l
Sodium phosphate 17g/l～23g/l
Sodium silicate 1ml/l
N。63110ml/l
Deionized water
Temperature: 55 DEG C～65 DEG C
Persistent period: 18min～20min
5. washing
Deionized water, washing time >=2min.
6. pickling
Sulphuric acid (H2SO4) 250g/l～300g/l
Chromic anhydride (CrO3) 45g/l～55g/l
Temperature: 55 DEG C～65 DEG C
Time: >=2min
7. passivation
Na2Cr2O7100g/l～150g/l
H2SO44g/l～6g/l
NaCl5g/l～18g/l
Temperature: 10 DEG C～35 DEG C
Time: 2min～5min
8. flowing cool water is washed
Tap water
Temperature: 12 DEG C～35 DEG C
Time: >=2min
9. stabilized treatment
Tap water
Temperature: 40 DEG C～60 DEG C
Persistent period: 10s～20s
10. dry
Device name: drying baker
Persistent period: 20min～30min
Temperature: 80 DEG C～100 DEG C
11. destressing heat treatment
Device name: high-temperature cabinet
Temperature: 250 DEG C～280 DEG C
Persistent period: 1h～2h
The type of cooling: natural cooling
12. depassivation film
Chromic anhydride 80g/l～140g/l
Sulphuric acid 3g/l～6g/l
Temperature: 10 DEG C～40 DEG C
Time: 3s～15s
Embodiment
Aircraft pyrite bonding band processing and manufacturing operation is as follows:
Sheet-metal baiting shapes the inspection of trichloro ethylene oil removing Passivation Treatment destressing heat treatment depassivation film
1. sheet-metal baiting shapes
2. trichloro ethylene oil removing
Trichloro ethylene
Radix Paeoniae Rubra (volume ratio) 1.5%～3%
Oil removing temperature 87 DEG C～91 DEG C
PH6～11
Anhydrous
With the speed less than 4m/min, part being immersed in steam, part is at least wanted to carry out oil removing in vapours district vapours irrigation twice.
Part must not have after oil removing solvent hold-up
3. Passivation Treatment
3.1 Solvent degreasings
At room temperature, dipping trichloroethane organic solvent with absorbent cotton or non-dust cloth, piece surface is carried out wiping oil removing, then dress odd part immerses oil removing in alkali oil removing solution.
3.2 alkali oil removings
Sodium carbonate 35g/l～45g/l
Sodium phosphate 17g/l～23g/l
Sodium silicate 1ml/l
N。63110ml/l
Deionized water
Temperature: 55 DEG C～65 DEG C
Persistent period: 18min～20min
3.3 washings
Deionized water, washing time >=2min.
3.4 pickling
Sulphuric acid (H2SO4) 250g/l～300g/l
Chromic anhydride (CrO3) 45g/l～55g/l
Temperature: 55 DEG C～65 DEG C
Time: >=2min
3.5 passivation
Na2Cr2O7100g/l～150g/l
H2SO44g/l～6g/l
NaCl5g/l～18g/l
Temperature: 10 DEG C～35 DEG C
Time: 2min～5min
3.6 flowing cool waters are washed
Tap water
Temperature: 12 DEG C～35 DEG C
Time: >=2min
3.7 stabilized treatment
Tap water
Temperature: 40 DEG C～60 DEG C
Persistent period: 10s～20s
3.8 dry
Device name: drying baker
Persistent period: 20min～30min
Temperature: 80 DEG C～100 DEG C
4. destressing heat treatment
Temperature: 250 DEG C～280 DEG C
Persistent period: 1h～2h
Natural cooling
5. depassivation film
Chromic anhydride 80g/l～140g/l
Sulphuric acid 3g/l～6g/l
Temperature: 10 DEG C～40 DEG C
Time: 3s～15s
6. inspection
Appearance color uniformity, without current mark and pollutant.
Claims (1)
1. a method for prevention and removal pyrite part heat-treatment oxidation color or oxide skin, is characterized in that,
1). blanking shapes
2). trichloro ethylene oil removing
With the speed less than 4m/min, part being immersed in trichloroethylene steam district, part is at least wanted to carry out oil removing in trichloro ethylene vapours district vapours irrigation twice, must not have solvent hold-up after oil removing on part；
3). Solvent degreasing
At room temperature, dipping acetone or trichloroethane organic solvent with absorbent cotton or non-dust cloth, piece surface is carried out wiping oil removing, then dress odd part immerses oil removing in alkali oil removing solution；
4). alkali oil removing
Sodium carbonate 35g/l～45g/l
Sodium phosphate 17g/l～23g/l
Sodium silicate 1ml/l
N。63110ml/l
Deionized water
Temperature: 55 DEG C～65 DEG C
Persistent period: 18min～20min
5). washing
Deionized water, washing time >=2min；
6). pickling
Sulphuric acid 250g/l～300g/l
Chromic anhydride 45g/l～55g/l
Temperature: 55 DEG C～65 DEG C
Time: >=2min
7). passivation
Sodium dichromate 100g/l～150g/l
Sulphuric acid 4g/l～6g/l
Sodium chloride 5g/l～18g/l
Temperature: 10 DEG C～35 DEG C
Time: 2min～5min
8). flowing cool water is washed
Tap water
Temperature: 12 DEG C～35 DEG C
Time: >=2min
9). stabilized treatment
Tap water
Temperature: 40 DEG C～60 DEG C
Persistent period: 10s～20s
10). dry
Persistent period: 20min～30min
Temperature: 80 DEG C～100 DEG C
11). destressing heat treatment
Temperature: 250 DEG C～280 DEG C
Persistent period: 1h～2h
The type of cooling: natural cooling
12). depassivation film
Chromic anhydride 80g/l～140g/l
Sulphuric acid 3g/l～6g/l
Temperature: 10 DEG C～40 DEG C
Time: 3s～15s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610164946.0A CN105803363B (en) | 2016-03-21 | 2016-03-21 | A kind of method prevented and remove brass part heat-treatment oxidation color or oxide skin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610164946.0A CN105803363B (en) | 2016-03-21 | 2016-03-21 | A kind of method prevented and remove brass part heat-treatment oxidation color or oxide skin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105803363A true CN105803363A (en) | 2016-07-27 |
| CN105803363B CN105803363B (en) | 2017-08-25 |
Family
ID=56454605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610164946.0A Active CN105803363B (en) | 2016-03-21 | 2016-03-21 | A kind of method prevented and remove brass part heat-treatment oxidation color or oxide skin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105803363B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108559985A (en) * | 2018-05-03 | 2018-09-21 | 中国航发哈尔滨轴承有限公司 | A kind of copper and copper alloy bearing retainer surface cleaning activation methods |
| CN110160944A (en) * | 2019-05-15 | 2019-08-23 | 南京钢铁股份有限公司 | A kind of evaluation method of hot rolled steel plate surface oxidation skin corrosion resisting property |
| CN110592573A (en) * | 2019-10-23 | 2019-12-20 | 中国航发贵州红林航空动力控制科技有限公司 | Chemical passivation process method for copper and copper alloy thin-wall parts |
| CN113600726A (en) * | 2021-07-07 | 2021-11-05 | 天长市仁宝五金科技有限公司 | Stamping method for quickly positioning and forming hollow needle copper bar cold heading |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02294490A (en) * | 1989-05-02 | 1990-12-05 | Nikko Guurudo Fuoiru Kk | Surface treatment for rolled copper foil |
| CN102418057A (en) * | 2011-11-25 | 2012-04-18 | 河北工业大学 | Heat treatment method of porous copper-aluminum-manganese shape memory alloy |
| CN104120435A (en) * | 2014-07-15 | 2014-10-29 | 扬州市天海滑线电气有限公司 | Process for machining copper base alloy trolley conductor |
-
2016
- 2016-03-21 CN CN201610164946.0A patent/CN105803363B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02294490A (en) * | 1989-05-02 | 1990-12-05 | Nikko Guurudo Fuoiru Kk | Surface treatment for rolled copper foil |
| CN102418057A (en) * | 2011-11-25 | 2012-04-18 | 河北工业大学 | Heat treatment method of porous copper-aluminum-manganese shape memory alloy |
| CN104120435A (en) * | 2014-07-15 | 2014-10-29 | 扬州市天海滑线电气有限公司 | Process for machining copper base alloy trolley conductor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108559985A (en) * | 2018-05-03 | 2018-09-21 | 中国航发哈尔滨轴承有限公司 | A kind of copper and copper alloy bearing retainer surface cleaning activation methods |
| CN110160944A (en) * | 2019-05-15 | 2019-08-23 | 南京钢铁股份有限公司 | A kind of evaluation method of hot rolled steel plate surface oxidation skin corrosion resisting property |
| CN110592573A (en) * | 2019-10-23 | 2019-12-20 | 中国航发贵州红林航空动力控制科技有限公司 | Chemical passivation process method for copper and copper alloy thin-wall parts |
| CN113600726A (en) * | 2021-07-07 | 2021-11-05 | 天长市仁宝五金科技有限公司 | Stamping method for quickly positioning and forming hollow needle copper bar cold heading |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105803363B (en) | 2017-08-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105803363A (en) | Method for preventing and removing oxide colour or oxide skin generated by heat treatment for brass parts | |
| CN105442018B (en) | Conductive oxidation process for automobile aluminum alloy parts | |
| CN106000841A (en) | Aluminum material electrostatic powder spraying technology | |
| CN105386030A (en) | Stainless steel surface processing method | |
| CN105241889A (en) | Acid pickling method for inspecting surface grinding burns of bearing steel bearing part | |
| CN107815710B (en) | A kind of process improving chrome layer binding force | |
| CN109837537A (en) | A method of improving the inhibition of copper piece surface | |
| CN108559985A (en) | A kind of copper and copper alloy bearing retainer surface cleaning activation methods | |
| CN105671541A (en) | Stainless steel passivating technique | |
| CN107090582A (en) | A kind of bite method detected for the grinding burn of bearing parts surface | |
| US3687740A (en) | Heat resistant chromate conversion coatings | |
| US2099340A (en) | Process of enameling | |
| US2480845A (en) | Electrolytic removal of resin from metal | |
| CN111074186A (en) | Fingerprint-resistant treatment method for surface of metal plate | |
| CN106011812B (en) | The preparation method of aluminum alloy surface silanization conversion film | |
| CN107497646A (en) | A kind of Metal surface anti-corrosion processing method | |
| CN106011835B (en) | Treatment solution used for bluing surface of aluminum alloy | |
| CN105063600B (en) | A kind of spring steel surface is turned blue film enhanced processing method | |
| CN103977988A (en) | Cleaning method for high-temperature component | |
| CN106011737A (en) | Surface oxidation treatment method for metal material | |
| CN105132905B (en) | A kind of spring steel surface is quickly turned blue processing method | |
| JPS57171695A (en) | Washing method of anode oxide film | |
| CN105862100B (en) | A kind of surface treatment method before 5086 aluminium alloy splicing | |
| CN109023330A (en) | A kind of process of precision copper piece passivation | |
| CN103898493A (en) | Brush plating cadmium passivating solution as well as preparation method and passivating method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |